The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 09, 2026
Filed:
Sep. 02, 2021
Php Fibers Gmbh, Obernburg, DE;
Christian Vieth, Wörth, DE;
Andreas Flachenecker, Essen, DE;
Lukas Lacho, Senica, SK;
Enrique Herrero Acero, Tulln an der Donau, AT;
PHP FIBERS GMBH, Obernburg, DE;
Abstract
A method for producing filaments from polyester waste, having the steps of mechanically comminuting the polyester waste, post-condensing the comminuted polyester waste in the solid phase, melting the post-condensed polyester waste and extruding the melt in order to form filaments. Prior to carrying out the melting step for extrusion purposes, the method is completely carried out below the melting temperature of the polyester waste. The solution viscosity of the post-condensed polyester waste equals at least 1.7. Possible applications of the filaments according to the invention are, for example, reinforcement carcasses for vehicle tyres.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile